Fat Boy® S


Take a ride on the dark side with 110 cubic inches of blacked-out custom attitude in the ferocious form of the Fat Boy® S. This shady monster has the most powerful engine available for a cruiser in 2017, the Screamin’ Eagle® Air-Cooled, Twin Cam 110B™. The Fat Boy® S model features blacked-out styling details, wheel to wheel, including a gloss black handlebar and riser, black bullet hole disc cast aluminum wheels, gloss black lower forks, axle nut covers, black brake lever and hydraulic clutch assembly, as well as black over/under shotgun exhaust with slash-cut mufflers.


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Product Description


  • Year2017
  • ManufacturerHarley-Davidson®
  • ModelFLSTFBS Fat Boy® S
  • TrimBase
  • Generic TypeCruiser


  • Length94.1 in.
  • Seat Height, (Laden)24.3 in.
  • Seat Height, (Unladen)26 in.
  • Ground Clearance4.7 in.
  • Rake (Seering Head)(Deg)31.6
  • Trail5.8 in.
  • Wheelbase64.2 in.
  • Fuel Capacity5 gal.
  • Oil Capacity3.5 qt.
  • Dry Weight709 lb.
  • Weight (In Running Order)739 lb.
  • EngineScreamin’ Eagle® Air-Cooled, Twin Cam 110B™
  • Displacement110 cu in.
  • Bore4 in.
  • Stroke4.374 in.
  • Engine TorqueJ1349, 108 ft-lbs. @ 4000 RPM
  • Fuel SystemElectronic Sequential Port Fuel Injection (ESPFI)
  • Compression Ratio9.5:1


  • Primary DriveChain, 34/46 ratio
  • Fuel Economy: Combined City/Hwy43 mpg
  • Gear Ratios (Overall) 1st9.311
  • Gear Ratios (Overall) 2nd6.454
  • Gear Ratios (Overall) 3rd4.793
  • Gear Ratios (Overall) 4th3.882
  • Gear Ratios (Overall) 5th3.307
  • Gear Ratios (Overall) 6th2.79

Wheels & Tires

  • Front WheelBlack, Bullet Hole Disc Cast Aluminum
  • Rear WheelBlack, Bullet Hole Disc Cast Aluminum
  • Tires, (Front Specs.)140/75R17 67V
  • Tires, (Rear Specs.)200/55R17 78V
  • LightingHigh beam, neutral, low oil pressure,
    turn signals, engine diagnostics, security system (optional),
    6-speed, low fuel warning, low battery, ABS


  • Brake System Type4-piston front and 2-piston rear
  • Lean Angle, Left (Deg.)25.6
  • Lean Angle, Right (Deg.)25.2
  • ExhaustHandlebars (Style) – Gloss Black handlebar and riser

Additional Information


BlackDenim, VividBlack